Device for clamping the bolts in ciuculab



' bed Gr, is placed.

KASSON FREEMAN, OF FOND DU LAC, WISCONSIN.

DEVICE FOR CLAIVIPING THE BOLTS IN CIRCULAR SAWING SHINGLE-Ii/IAGHINES.

Specicaton of Letters Patent No. 24,111, dated May 24, 1859.

T o all whom it may concern.'

Be it known that I, KAssoN FREEMAN, of Fond du Lac, in the county of Fond du Lac and State of Tisconsiii, have invented a new and Improved Shingle-Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a vertical section of vention, taken in the line m, rv, Fig. 2. Q, a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the two figures.

rIhis invention relates to an improvement on a shingle machine for which Letters Patent were granted to me bearing date June 29th 1858.

The within described invent-ion consists in an improved device for operating the jaws or dogs, for the purpose of clogging and undogging the bolts.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a frame which may be of rectangular or other proper form, and having a vertical arbor B,placed centrally within it, the upper end of said arbor having a circular plate C, attached to it, said plate having a series of square openings a., made in it, near its periphery.l Each opening a, is provided with a sliding jaw or dog D, the ends of which are fitted in proper grooves Z), in the sides of the openings. The inner edges c, of the openings a, serve as stationary jaws or dogs. The area of the plate C, exceeds that of the top of the frame A, and said plate is toothed at its periphery, and a pinion E, gears therein, said pinion being at the upper end of a shaft F, at one side of the frame A. On the upper part of the frame A, and below the plate C, a curved This bed is stationary and extends underneath these openings a. as shown clearly in Fig. 2. The bed Gr, may be constructed of a series of curved rods d, iitted in cross bars e.

At one end of the box G, a tilting bed H, is placed. This bed may be constructed similarly to the bed Gr, but is pivoted at the center, as shown at f, 7, so that it may be inclined or tilted to assume the two positions as indicated by the solid black and dotted my in- Fig.

lines in Fig. l. Underneath the tilting bed H, a sliding double wedge I, is placed and fitted between guides g, g. To the outer end of this `double wedge an upright pin L, is attached, and to the under side of the plate C, near its edge a wedge shaped block J, is pivoted.

Each dog D, is provided with a small frame 1', which projects over the edge of the plate C, and has a vertical rod j, attached. These rods have friction rollers lc, on them.

K,represents a curved bar which forms `a portion of a circle concentric with the plate C. This curved bar has two eyes or sockets Z, Z, attached to its outer side and these eyes or sockets it loosely on vertical rods m, m, which are attached to sockets n, a, that slide freely on horizontal rods 0, 0. These rods 0, 0, are attached to the frame A, by pivots To the inner end of each rod 0, a cord g, is attached. These cords pass over pins fr, attached to the sockets n, 71, and have weights s, attached to their lower ends. The weights s, it will be seen have a tendency to keep the bar K, toward the plate C, and against the rollers 7c, on the rods y', of the dogs D. One end of the curved bar K, is curved slightly outward as shown at t, and the opposite end has a curved bar u, attached to it, the form of which is plainly shown in Fig.' 2.

On the top of the frame A, and underneath the plate C, there is an apron L. This apron is a sort of trough or box placed by the side of the saw M, and having its side that adjoins the saw open with the edges curved to correspond with the curvature of the periphery of the saw or to approximate thereto, see Fig. 2. The apron may be constructed of wood or sheet metal and of a size proportionate to the diameter of the saw M. The saw M, is placed on a vertical shaft N, and at the end of the tilting bed H, as shown clearly in Fig. 2.

The operation of the machine is as follows :-Motion is given the shafts B, F, N, by any suitable arrangement of belts a', and bolts, shown in red, are placed in the openings a, in the plate C, which as it revolves carries the bolts around on the stationary bed Gr, and tilting bed H, and saw M, the latter cutting the shingles from the bolts, which are inclined irst in one direction and then in the other by the tilting of the bed H, through the medium of the wedge J. This tilting of the bed H, causes the shingles to be .out from the bolts in taper form. In `order to allow the bolts to be tilted they must be free from the dogs D,

and they must of course be rmly clamped whilebeing acted upon by the sawl M. The `bolts are clam ed just after being tilted in consequence el) the rollers 7c, of the dogs coming in contact with the curved bar K, said bar being held against the rollers by the weights s, as previously stated, the bar byA means of the weights forcing the dogs against the bolts and firmly holding them while being sawed, the bolts being released Y from the dogsby means of the curved bar u, just after they leave the saw M. By this arrangement the bolts are dogged and undogged by a very simple means, and by one that is not liable to get out of repair.

The apron L, catches the sawdust and allows it to be discharged in a stream from the machine, said apron keeping the upper surface of the saw and bed H, free from dust and insuring the perfect operation of the machine.

I do not claim the rotating plateC, and stationary bed G, and tilting bed I-I, for they in connection with the saw M, have been previously used and may be seen in the machine formerly patented by me and previously alluded to; neither do I claim the apron L but, having thus described my invention, l

What I claim as new and desire to secure by Letters Patent, is,

The arrangement of the sliding or adjustable bar K, with weights s, attached, or their equivalents, when used in connection with the sliding jaws D, for the purpose specified.

j KASSON FREEMAN.

Witnesses ROBERT FLINTE, L. GOLDSTUGKER. 

